Fig. 5From: Protruded duodenal tumor arising from Santorini’s duct of the pancreas: a rare case of intraductal papillary mucinous neoplasm mimicking a duodenal polypoid tumorMicroscopic findings of a duodenal tumor. The transition region between the IPMA (left and upper side) and normal duodenal mucosa (right side) (a). This intraductal tumor has intermediate level nuclear atypia (b) and was diagnosed as an IPMA with intermediate dysplasia. IPMA: intraductal papillary mucinous adenomaBack to article page